公开(公告)号：US5717731A

公开(公告)日：1998-02-10

申请号：US650769

申请日：1996-05-20

申请人： Carl L. Aley ,  Craig D. Thompson ,  Robert B. Henstenburg

发明人： Carl L. Aley ,  Craig D. Thompson ,  Robert B. Henstenburg

IPC分类号： G21C13/02 ,  G21C13/00

CPC分类号： G21C13/02 ,  G21Y2002/202 ,  G21Y2002/203 ,  G21Y2004/303 ,  Y02E30/40

摘要： A circular outage cover of light-weight composite material is normally situated in a standby position adjacent to the opening at the outer end of the equipment access tunnel of a nuclear reactor containment vessel. In case of an emergency during an outage, the outage cover can be quickly rolled into position and engaged with a transition ring provided as an extension of the tunnel by retractable retaining shoes on the retaining ring and an inflatable seal carried by the outage cover. The ability of the outage cover to be closed quickly makes it possible to keep the operational cover open throughout most of the outage, and reduces the overall outage time. Hydraulic, pneumatic and electrical services pass radially through the transition ring and do not interfere with closure of the outage cover. An auxiliary diaphragm cooperable with the transition ring is used for pressure testing of the outage cover.

摘要翻译： 轻质复合材料的圆形中断盖通常位于与核反应堆安全壳的设备通道的外端的开口相邻的待机位置。 在停电期间发生紧急情况时，可以将停电盖快速卷入就位，并将其作为隧道延伸部分设置的过渡环，并将其固定在保持环上的可伸缩保持件和由中断盖承载的充气密封件上。 中断盖快速关闭的能力使得可以在大部分停电期间保持操作盖，并减少总停电时间。 液压，气动和电气服务径向通过过渡环，不要干扰中断盖的闭合。 与过渡环配合的辅助隔膜用于中断盖的压力测试。